Electric fixture.



G. A. HARTER..

ELECTRIC FIXTURE.

'APPLICATION'FILED MAR. I8, 1916.

1,261,024,, Patented Apr. 2. 1918.

f/Vl/ENTOE CusrfaV/l. HEJ'ZLQT eus'rav A. Harman, or onrcaeo, rumors.

ELECTRIC FIXTUBE.

Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Electric Fixtures, of which the following is a specification.

This invention relates to an electric lighting fixture of that type more particularly described as an indirect lighting fixture, or more properly a semi-indirect fixture since it depends not only on reflected light from an illuminating surface but also upon the illumination which is obtained by means of a' translucent globe. The invention consists in the novel construction, combination and arrangement of the several parts.

In the drawings, Figure l is a sectional elevation, with parts broken away and in section, of a fixture constructed in accordance with the principles of my invention;

Fig. 2 is a view of the top of the fixture shown in Fig. 1; Fig. 3 is a detail of the globe supporting means; and Fig. 1 is a detail of thehook andcanppy support.

In most indirect llghting fixtures an illuminating or reflecting surface is protioned the reflecting or illuminating surface is either the Wall or ceiling of the room in which the fixture is placed, and in some of the fixtures a canopy with a flat or plain reflecting surface is employed.

In the present invention a canopy 10 is provided, usually circular in form, but of course it may be of any desired shape, formed at its edges with a molding 11 which spaces it from the plane of its contact with awall or ceiling. This canopy is formed with a continuously curved re fleeting or illuminating surface 12 which ex: tends from a perforated portion 13 adjacent the center in a continuous curve tothe edge of the canopy where it joins the molding portion 11. The continuous curve 12, therefore,.has a portion 14 which is on one side or above the horizontal plane of its outer extremity or edge 15, as shown in Fig. l,

Specification of Letters Patent.

Patented Apr. 23, 19118.

Application filed March 13 1916. Serial No. 85,017.

while the other portion of the curved surface 12 adjacent the center thereof is on the other side ofthe plane of the edge 15.

A pair of plates 16 are spaced apart by arms l7and heat insulating members \18 between the arms and each of the plates, all secured together by rivets or other suitable fastening means I The extremity of each arm 17 has a threaded perforation, and the canopy 10 is provided with corresponding perforations through which threaded pins 19 are inserted, an ornamental eye member 20 being secured to the end of each pin and disposed on the under side of the canopy to support it from-the plates 16. Interposed between the under side of'the canopy and the eye member 20 is a washer 21 preferably beveled or inclined to conform to the curvature of the illuminating surface 12 of the canopy. Each threaded pin 19 is therefore separately ad ustable with respect to the the wall or ceiling, or for adjusting any portion of the canopy to conform to irregularities of the surface of the ceiling or the wall to which it is attached. As shown in Fig. 1 the fixture is supported by means of a crow-foot 22 which is attached to a fixture stud commonly provided in the ceiling of a building, or may be threaded -on a suspend ing rod or stem for that purpose.

Secured to the under side of the lower plate 16 is a yoke 23 in which a lamp socket 24 is freely adjustable by means of a pair of socket clamping members 25 which are held in engagement with the extremities of the yoke and with the socket by means of fastening devices 26; that is, the socket clamping devices re adjustable in the yoke and the socket itself is adjustable in the lamping devices giving a double adjustment to the socket. Interposed between the yoke and the lower plate 16 is a block of heat insulating material 27. An electric lamp 28 is inserted through the perforated portion 13 of the canopy and into the socket 24, the

bulb of the lamp extending below the canopy so that the filament thereof is sub-- stantially at the point where the curved surface of the canopy would meet if it were extended below the apertured portion 13.

Sill

ice 7 hooks 30 each of which is formed with a curved end 31. adapted to be inserted through the eye member 20, the eye member being formed with a flattened portion 32 and the bent end 31 of the hook being formed with a corresponding flattened notch 33, to assist in holding the hook at the proper place with respect to the eye member. The upper edge of the bowl is provided with perforations 34 corresponding in number to the supporting hooks 30, and inserted through each perforation 34 is a threaded stem 35 having a flat head preferably in the form of an ornamental. rosette, with an L- shaped bracket 36 screwed on the threaded stem 35 inside of-the bowl. Washers 37 of felt or other suitable material are preferably disposed on both sides of the bowl surrounding the threaded stem 35. The bracket 36 is provided with a perforation 38 through which a threaded extremity 39 of an eye bolt 40 is inserted, the eye being hooked into a notch 41 at the lower end of the hook 3o. A nut 42 is adjustable upon the threaded end 39 of the eye bolt to hold it and the bowl at its proper position. Thus it is seen that the threaded stems 35 and eye bolts 40 are separately assembled on the bowl. 36, and in order to fasten the bowl in place with respect to the canopy it is onlyv necessary to connect the eye bolts 40 with their corresponding eye members 20 attached .below the canopy, by means of the hooks 30. The eye bolts each having a separate adjust able nut 42 permit the bowl to be raised and lowered with respect to the canopy or to be adjusted in height at any point thereof.

One of the principal objects of the present invention is to provide such an adjustment for the suspended bowl that the direct rays from the lamp of the fixture can be restricted entirely to the curved surface 12 of the canopy, extending as far as the edge 15. It will be seen from Fig. 1 that the outer edge 15 of the curved surface12 and the upper edge of thebowl 29 are substantially in line with the uppermost direct rays of the lamp 28 so that by adjustment these direct rays will not strike beyond the edge 15 nor will they be cut off by the bowl from striking the entire curved surface 1.2 up to the edge 15. This will insure that the reflecting and illuminating surface 12 will receive the maximum lighting rays which, because of the continuous curvature of the surface 12, will be reflected in all directions, even immediately below the fixture since it is obvious from an inspection of Fig. 1 that the portion of the curved surface 12 designated by the reference numeral 14, is in such a.- direction that light will be reflected therefrom substantially at right angles or directly below the fixture.

It will be noticed that the'lamp itself is also adjustable in height with respect tothc lamp of greater candle power. to illuminate V a larger room, which will require that both the lamp and globe be spaced farther from I the canopy. Lamps of different candle power usually differ in length, but it is obvious that with the applicants construction any desired adjustments may be made for producing any desired or maximum lighting effect.

In this type of lamp a switch 43 is supported by an arm 44 attached to the plates 16 and operated by a pull-cord 45 which extends through a bushing 46 inthe canopy.

Insulating bushings 47 also extend through both of the plates 16 through which con ductors 48 extend for connecting the lamp 28 with the source of supply.

One of the principal objects of the invention consists in the means by which the supporting platesare insulated from any actual metallic contact with. the reflecting part of the canopy or any of the parts which receive -the direct heat or radiation of the lamp. Lamps of the type to, which the invention is applicable generate. considerable heat which I is so considerable as to prevent some types of fixtures from being passed by fire under writers and city authorities, the heat being s uiiicient sometimes to melt insulation from the wires and make the structure dangerous.

However, by insulating the plates as described no heat is conducted to the plates 16 and it is found that the supporting structure is many degrees cooler than if such heat insulation is not provided, thereby rendering the fixture safe and secure for all places.

What I claim is:

1..In an electric fixture, the combination with a support, of. a canopy adjustable in height with respect thereto, and a lamp independently adjustable in height with respect to the support and below the canopy.

2. In an electric fixture, the combination with a support, of a canopy having'a central perforation, means to uphold andadjust the height of any portion of the canopy with -respect to thesupport, a yoke fixed to the support, and a lamp extending through the perforation of the canopy andadjustably mounted in the yoke for varying the height of the lamp with respect to the canopy.

3. In an electric fixture, the combination with an ad ustable canopy, of a lamp adjustnuances able in height below the canopy, and a bowl independently adjustable in height below the canopy substantially inclosing the lamp.

4. In an electric fixture, the combination adjusting "the height ofthe bowl with re-.

spect to the canopy. I v

5. In an electric fixture,the combination with a support, a canopy and a bowl, of perforated threaded'arms extending from the' support, an eye-bolt having a'threaded memher extending from below through thecanopy into each of the said arms for adjusting the height of the canopy at each of the several arms, and supporting means for adjustmg the height of the bowl to engage each eye-bolt projecting below the canopy.

6. In an electric fixture, the combination with a support comprising arms having threaded perforations, of 'a canopy having a curved reflecting surface, eye-bolts each having a threaded member extending through the canopy and threaded into said arms, and a beveled washer inserted between the eye bolt and the canopy so that the curved surface of the canopy will substantially conform to the beveled surface of the washer.

7. In an electriofixture, the combination of a support, a canopy and a bowl, of an eyeholt extending through the canopyinto the support for upholding the canopy having a flat notch at the bottom of the eye, and supporting means for the bowl comprising a hook having a fiat notch to engage and correspond with the flat notch of the eye-bolt.

81- In an electric fixture, the combination with a support comprising. dependingmembers adjustable in height, of a'bowl, and a.

support therefor. comprising a hook to engage said members, and means to adjustably connect each hook with the bowl for varying the height thereof.

9. In an electric fixture, the combination with a support, of a plurality of hooks to engage the support, a bowl having perforations adjacent the top corresponding in number to the said hooks, means secured to the bowl through each of said perforations comprising a perforated member inside of the bowl, and an eye-bolt engaged by the saidhook having a threaded portion extending through the said perforation, and a nut adjustable on said threaded portion to adjustably support the bowl.

10. in an electric fixture, the combination with a support comprising a plurality of eye members, a hook engaging each eye member, a bowl having a perforation for each hook, a threaded member having an enlarged head disposed at the outside of the bowl extendin through the perforation of the bowl, a perforated angle member screwed on the threaded portion of the said threaded member inside of the bowl, felt washers disposed against the inner and outer sides of the bowl adjacent said perforation thereof conforming" to the surface of the bowl, and an eye-bolt engaged by the said hook having a threaded extremity extending through the perforation of the 'anglememben-and a nut adjustable on the threaded portion of the eye-bolt to hold the bowl independently adjustable with respect to the hook.

11. In an electric fixture, the combination with a support, a canopy having a perforated'center and a' continuously curved surface extendingtherefrom, a bowl, and a lamp extending through the said perforation and intothe bowl, of a yoke secured to the support, a lamp socket adjustable in height in the yoke, supporting bolts for the canopy extending into the support, supporting means for the bowl engaging said supporting bolts of the canopy, and a threaded member. attached to the upper sideof the said support by means of which the fixture is supported.

12. In an electric fixture, the combination with a support having extending arms, of a canopy having abentral lamp aperture, and

a curved reflecting surface extending therewe sponding to the arms of the support, a bowl v supported'beneath the canopy and of less diameter than a circle connecting said outer perforations in the canopy, a lamp, a switch supported by one of said arms having a pull-cord extending through one of the perforations of the canopy for controlling the lamp, and means for connecting the canopy and the bowl'to the other supporting arms through the other perforations of the canopy.

13. In anelectric fixture, the combination with a supporting plate having extending arms, a yoke fixed to the'center thereof, a lamp socket adjustably secured in the yoke, a canopy having a central perforation and a continuously curved surface extending upwardly therefrom but curved downwardly at the edge, means to connect the canopy to the said arms, the yoke being disposed in the central downwardly extending portion of the canopy, and a lamp extending through the perforation of the canopy and variable with said socket "for varying the distance of the lamp from the canopy.

14:. In" an electric fixture, supporting means comprising a plate, arms extendmg therefrom, heat insulating means between the arms and the plate, and a canopy supported by the arms.

15. I11 an electric fixture, the combination with a metal canopy, arms to which the canopyis attached, a support for the canopy comprising a plate by which the entire fixture is supported, and heat insulating means interposed between the arms and the plate for preventing the v-transmission of heat from the canopy to the plate.

16. In an electric lighting fixture, the combination with supporting means comprising a plate, arms extending therefrom but connected to the plate, heat insulating means interposed between the arms and the plate, a canopy supported by the arms, a lamp holding yoke supported by the plate, and heat insulating means interposed between the yoke and the plate to prevent the conduction of heat to the said supporting plate.

17. In an electric lighting fixture, the combination with a canopy and a lamp supporting device, of a fixed support to which the.

said canopy and lamp supporting device are secured, the saidsupport comprising a pair of plates spaced apart, arms extending therefrom but secured between them, heat insulating means disposed between each arm and both of the plates, and heat insulating means disposed between the lamp support and one of the plates to prevent the conduction of heat to the said support by direct metallic contact either with the canopy or with the lamp supporting means.

18. In an electric fixture, the combination with a canopy having a downwardly projecting central portion, of supporting means comprising a plate extending closely over the projection of the canopy, a block of heat insulating material! covering the plate, means for securing the canopy to the said supporting means, and a lamp "holder disposed in the space formed by the proj ecting central portion of the canopy and substantially inclosed by the canopy and said plate.

In testimony whereof I have signed my name to thisspecification, in the presence of two subscribing witnesses, on this 14th .day of March, A. D. 1916.

GUSTAV A. HARTER.

Witnesses:

GERTRUDE M. BARNES, K. W. WONNELL, 

